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End Centered Unit Cell and Particle Distribution Quiz

12 Questions

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End Centered Unit Cell and Particle Distribution Quiz

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Questions and Answers

What is the coordination number for square close packing?

What type of arrangement is found in hexagonal close packing?

ABAB

How are the spheres arranged in the two dimensional square close packed layers?

Exactly above each other

What type of lattice is formed in three dimensional close packing from two dimensional square close packed layers?

Simple cubic Signup and view all the answers

What types of voids are created when the second layer is placed over the first layer in close packing?

Tetrahedral voids and octahedral voids Signup and view all the answers

How are the third layer spheres placed in relation to the second layer in close packing?

The third layer spheres may cover the tetrahedral voids or the octahedral voids of the second layer. Signup and view all the answers

What is the coordination number in a hexagonal close packed structure?

12 Signup and view all the answers

Give an example of an element that crystallizes in a cubic close packed structure.

Copper (Cu) or Silver (Ag) Signup and view all the answers

What is the difference between the number of atoms shared in a corner and a face centred unit cell?

Corner: 1/8 of an atom, Face centred: 1/2 of an atom Signup and view all the answers

How many atoms belong to a body centred unit cell?

1 atom Signup and view all the answers

What is the coordination number and arrangement in close packing in one dimension?

Coordination number: 2, Each sphere is in contact with 2 neighbours Signup and view all the answers

How are close packed structures generated in two dimensions?

By stacking rows of close packed spheres in two ways: Square and Hexagonal close packing Signup and view all the answers